code: def trial_str_creator(trial):
      return "{}_{}_123".format(trial.trainable_name, trial.trial_id)
  
file_path: ray/python/ray/tune/examples/logging_example.py
imports: import argparse
  import time
  from ray import train, tune
  from ray.tune.logger import LoggerCallback
label_desc: Use image node_id 1 for calling a global function with example usage: trial_str_creator(trial) and returns: str